<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }
    .container {
      margin-left: 200px;
      margin-right: 150px;
    }

    .box {
      float: left;

    }

    #center {
      width: 100%;
      background-color: lightcoral;
    }

    #left {
      width: 200px;
      position: relative;
      margin-left: -100%;
      left: -200px;
      background-color: lightgreen;
    }

    #right {
      width: 150px;
      background-color: lightskyblue;
      margin-right: -150px;
    }
  </style>
</head>

<body>
  <div class="container">
    <div class="box" id="center">center</div>
    <div class="box" id="left">left</div>
    <div class="box" id="right">right</div>
  </div>
</body>

</html>